Mattress



FIG. 1 is a top perspective view of a mattress.

FIG. 2 is a front view of the mattress of FIG. 1.

FIG. 3 is a back view of the mattress of FIG. 1.

FIG. 4 is a left side view of the mattress of FIG. 1.

FIG. 5 is a right side view of the mattress of FIG. 1.

FIG. 6 is a top view of the mattress of FIG. 1; and,

FIG. 7 is a bottom view of the mattress of FIG. 1.

A characteristic feature of the design resides in visible stitching,which is bound by the solid lined edges of the mattress and forms a partof the claimed design. Other broken lines are included for the purposeof illustrating unclaimed portions of the mattress that form no part ofthe claimed design. The [dash]-[long dash]-[dash] line shown in FIG. 7is a bound of the claim and forms no part of the claimed design.

CLAIM The ornamental design for a mattress, as shown and described.